Electromagnetic interference of nickel ferrite and copper ferrite filled low-density polyethylene composite

摘要

This study reports the preparation of nickel ferrite (NiFe2O4) and copper ferrite (CuFe2O4) filled low-density polyethylene (LDPE) composite through a melt mixing process for employing in electromagnetic shielding applications. The X-Ray diffraction (XRD) with different pH values 6, 8 and 10 resulted the formation of cubic structure for NiFe(2)O(4)of cristallite size 21 nm, 25 nm and 40 nm, respectively and tetragonal structure for CuFe(2)O(4)with crystallite size 27 nm, 24 nm and 91 nm, respectively. Electromagnetic interference (EMI) shielding measurements of the prepared samples LDPE/NiFe(2)O(4)and LDPE/CuFe(2)O(4)having different pH values 6, 8 and, 10 for 10% and 30% filler concentrations were analyzed over X-band with a frequency range from 8 GHz to 12.4 GHz. The pure LDPE exhibits the total shielding effectiveness (SE) of 11.6 dB whereas with the addition of NiFe(2)O(4)and CuFe2O4, the composites exhibit increment in EMI shielding effectiveness up to the maximum value of 15.3 dB for LDPE/NiFe(2)O(4)and 12.6 dB for LDPE/CuFe(2)O(4)respectively.